

package com.hazelcast.query.impl;

import com.hazelcast.internal.serialization.Data;
import com.hazelcast.internal.util.AbstractCompositeIterator;

import java.util.Iterator;
import java.util.Map;

@SuppressWarnings("rawtypes")
final class IndexEntryFlatteningIterator extends AbstractCompositeIterator<QueryableEntry> {

    private final Iterator<Map<Data, QueryableEntry>> iterator;

    IndexEntryFlatteningIterator(Iterator<Map<Data, QueryableEntry>> iterator) {
        this.iterator = iterator;
    }

    @Override
    protected Iterator<QueryableEntry> nextIterator() {
        while (iterator.hasNext()) {
            Map<Data, QueryableEntry> map = iterator.next();

            Iterator<QueryableEntry> currentIterator0 = map.values().iterator();

            if (currentIterator0.hasNext()) {
                return currentIterator0;
            }
        }

        return null;
    }
}
